Testing equipment of dynamic penetration plate anchor for hypergravity centrifuges

Abstract

A testing equipment of dynamic penetration plate anchor for a hypergravity centrifuge includes five parts: a test model box, a magnetic induction positioning system, an anchor release device, a loading and measuring device and a dynamic penetration plate anchor. A test foundation is disposed in the test model box, the top part of the test model box along a lengthwise direction is provided with a slide rail of model box, the anchor release device and the loading and measuring device are installed on the slide rail of model box, and the magnetic induction positioning system is installed on the anchor plate of the dynamic penetration plate anchor and the test model box. It can solve the problem that movement information of the anchor body is difficult to obtain due to opaque soil, and can accurately and effectively carry out tests of dynamic penetration plate anchors of hypergravity centrifuges.

What is claimed is: 
     
       1. A testing equipment of dynamic penetration plate anchor for a hypergravity centrifuge, comprising: a test model box ( 1 ), a magnetic induction positioning system, an anchor release device ( 8 ), a loading and measuring device ( 4 ), and a dynamic penetration plate anchor ( 19 );
 wherein the test model box ( 1 ) is configured to accommodate a test soil ( 2 ), the test model box ( 1 ) is provided with a slide rail ( 3 ) of model box at a top part along a lengthwise direction, the anchor release device ( 8 ) and the loading and measuring device ( 4 ) are installed on the slide rail ( 3 ) of model box, the dynamic penetration plate anchor ( 19 ) and the loading and measuring device ( 4 ) are connected by an anchor line ( 20 ), and the magnetic induction positioning system is attached on the dynamic penetration plate anchor ( 19 ) and the test model box ( 1 ); 
 wherein the anchor release device ( 8 ) comprises a guide tube ( 13 ), a spring ( 11 ), a guide tube support ( 10 ) and a finger cylinder ( 21 ); the guide tube support ( 10 ) is slidably mounted on the slide rail ( 3 ) of model box, an upper part of the guide tube ( 13 ) is hinged with an upper part of the guide tube support ( 10 ), and a lower part of the guide tube ( 13 ) is hinged horizontally and slidable on a lower part of the guide tube support ( 10 ) through a horizontal sliding trail ( 9 ); a lower end of the guide tube ( 13 ) is opened, and a side wall of an upper end of the guide tube ( 13 ) is provided with an opening; the finger cylinder ( 21 ) is fixed on the upper part of the guide tube support ( 10 ), pneumatic clamping jaws of the finger cylinder ( 21 ) are located at the opening of the guide tube ( 13 ), and the pneumatic clamping jaws are closable to clamp and fix the dynamic penetration plate anchor ( 19 ); and the spring ( 11 ) is arranged between an upper end of the dynamic penetration plate anchor ( 19 ) and an inner top surface of the guide tube ( 13 ); 
 wherein the loading and measuring device ( 4 ) comprises a loading frame, a variable frequency motor ( 5 ), a force sensor ( 7 ), and a pulley ( 6 ); the variable frequency motor ( 5 ) is installed in the loading frame, the loading frame is mounted on the slide rail ( 3 ) of model box, an output shaft of the variable frequency motor ( 5 ) is connected with one end of the anchor line ( 20 ), a middle of the anchor line ( 20 ) is connected with the force sensor ( 7 ), the pulley ( 6 ) is arranged in the loading frame and below the variable frequency motor ( 5 ), and the other end of the anchor line ( 20 ) winds through the pulley ( 6 ) and enters the guide tube ( 13 ) of the anchor release device ( 8 ) and further connects with an anchor padeye of the dynamic penetration plate anchor ( 19 ); 
 wherein the magnetic induction positioning system comprises a magnetic source ( 14 ), a miniature magnetic induction sensor ( 15 ), and a data processing and control circuit ( 16 ); the magnetic source ( 14 ) is fixed above the upper part of the test model box ( 1 ), the miniature magnetic induction sensor ( 15 ) is fixed on the dynamic penetration plate anchor ( 19 ), both the miniature magnetic induction sensor ( 15 ) and the magnetic source ( 14 ) are connected with the data processing and control circuit ( 16 ), and the data processing and control circuit is connected with a data terminal computer ( 17 ) and a power supply ( 18 ) individually. 
 
     
     
       2. The testing equipment of dynamic penetration plate anchor for a hypergravity centrifuge according to  claim 1 , wherein the lower part of the guide tube ( 13 ) is hinged horizontally and slidable on the lower part of the guide tube support ( 10 ) through the horizontal sliding trail ( 9 ), wherein a strip groove is provided in a middle of the horizontal sliding trail ( 9 ), the strip groove is engaged with a convex block on the guide tube support ( 10 ), and an end of the horizontal sliding trail ( 9 ) is hinged with the guide tube ( 13 ). 
     
     
       3. The testing equipment of dynamic penetration plate anchor for a hypergravity centrifuge according to  claim 1 , wherein the test model box ( 1 ) is a cuboid box made of polymethyl methacrylate (PMMA). 
     
     
       4. The testing equipment of dynamic penetration plate anchor for a hypergravity centrifuge according to  claim 1 , wherein the test model box ( 1 ) is installed and fixed at a bottom of a hanging basket of the hypergravity centrifuge.